﻿// http://www.zimms.com
// Copyright (c) 2002-2007
// by James Zimmerman
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in the
// Software without restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
// Software, and to permit persons to whom the Software is furnished to do so, subject
// to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies
// or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

/// <summary>
/// Represents a single self evaluating rule.
/// </summary>
/// <remarks>Based on the specification pattern (Evans, Domain Driven Design).</remarks>
/// <typeparam name="T">The type to evalutate.</typeparam>
public interface IRule<T>
{
    /// <summary>
    /// Evalutates the supplied object optionally returning a modified instance.
    /// </summary>
    /// <param name="item">The object to evaluate.</param>
    /// <returns>The optionally modified instance.</returns>
    T Evaluate(T item);
}

